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Wang S, Li J, Bai J, Li JM, Che YL, Lin QY, Zhang YL, Li HH. Corrigendum to "The immunoproteasome subunit LMP10 mediates angiotensin II-induced retinopathy in mice" [Redox Biol. 16 (2018) 129-138]. Redox Biol 2024; 72:103163. [PMID: 38653649 DOI: 10.1016/j.redox.2024.103163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024] Open
Affiliation(s)
- Shuai Wang
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China; School of Public Health, Dalian Medical University, Dalian, 116004, China
| | - Jing Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 11600, China
| | - Jie Bai
- School of Public Health, Dalian Medical University, Dalian, 116004, China
| | - Jing-Min Li
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Yi-Lin Che
- Department of Radiotherapy Oncology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 11600, China
| | - Yun-Long Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 11600, China
| | - Hui-Hua Li
- School of Public Health, Dalian Medical University, Dalian, 116004, China; Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 11600, China.
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Lin QY, Yu WJ, Bai J, Jiang WX, Li HH. Mac-1 deficiency ameliorates pressure overloaded heart failure through inhibiting macrophage polarization and activation. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167048. [PMID: 38296117 DOI: 10.1016/j.bbadis.2024.167048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 01/25/2024] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Persistent pressure overload commonly leads to pathological cardiac hypertrophy and remodeling, ultimately leading to heart failure (HF). Cardiac remodeling is associated with the involvement of immune cells and the inflammatory response in pathogenesis. The macrophage-1 antigen (Mac-1) is specifically expressed on leukocytes and regulates their migration and polarization. Nonetheless, the involvement of Mac-1 in cardiac remodeling and HF caused by pressure overload has not been determined. The Mac-1-knockout (KO) and wild-type (WT) mice were subjected to transverse aortic constriction (TAC) for 6 weeks. Echocardiography and pressure-volume loop assessments were used to evaluate cardiac function, and cardiac remodeling and macrophage infiltration and polarization were estimated by histopathology and molecular techniques. The findings of our study demonstrated that Mac-1 expression was markedly increased in hearts subjected to TAC treatment. Moreover, compared with WT mice, Mac-1-KO mice exhibited dramatically ameliorated TAC-induced cardiac dysfunction, hypertrophy, fibrosis, oxidative stress and apoptosis. The potential positive impacts may be linked to the inhibition of macrophage infiltration and M1 polarization via reductions in NF-kB and STAT1 expression and upregulation of STAT6. In conclusion, this research reveals a new function of Mac-1 deficiency in reducing pathological cardiac remodeling and HF caused by pressure overload. Additionally, inhibiting Mac-1 could be a potential treatment option for patients with HF in a clinical setting.
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Affiliation(s)
- Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China.
| | - Wei-Jia Yu
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jie Bai
- School of Public Health, Dalian Medical University, Dalian, China
| | - Wen-Xi Jiang
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, China
| | - Hui-Hua Li
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China; Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, China.
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Zhang YL, Bai J, Yu WJ, Lin QY, Li HH. CD11b mediates hypertensive cardiac remodeling by regulating macrophage infiltration and polarization. J Adv Res 2024; 55:17-31. [PMID: 36822392 PMCID: PMC10770112 DOI: 10.1016/j.jare.2023.02.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/12/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
INTRODUCTION Leukocyte infiltration is an early event during cardiac remodeling frequently leading to heart failure (HF). Integrins mediate leukocyte infiltration during inflammation. However, the importance of specific integrins in hypertensive cardiac remodeling is still unclear. OBJECTIVES To elucidate the significance of CD11b in hypertensive cardiac remodeling. METHODS Angiotensin (Ang II) or deoxycorticosterone acetate (DOCA)-salt was used to induce cardiac remodeling in mice of gene knockout (KO), bone marrow (BM) chimera, and the CD11b neutralizing antibody or agonist leukadherin-1 (LA1) treatment. RESULTS Our microarray data showed that integrin subunits Itgam (CD11b) and Itgb2 (CD18) were the most highly upregulated in Ang II-infused hearts. CD11b expression and CD11b/CD18+ myelomonocytes were also time-dependently increased. KO or pharmacological blockade of CD11b greatly attenuated cardiac remodeling and macrophage infiltration and M1 polarization induced by Ang II or DOCA-salt. This protection was verified in wild-type mice transplanted with CD11b-deficient BM cells. Conversely, administration of CD11b agonist LA1 showed the opposite effects. Further, CD11b KO reduced Ang II-induced macrophage adhesion and M1 polarization, leading to reduction of cardiomyocyte enlargement and fibroblast differentiation in vitro. The numbers of CD14+CD11b+CD18+ monocytes and CD15+CD11b+CD18+ granulocytes were obviously higher in HF patients than in normal controls. CONCLUSION Our data demonstrate an important role of CD11b+ myeloid cells in hypertensive cardiac remodeling, and suggest that HF may benefit from targeting CD11b.
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Affiliation(s)
- Yun-Long Zhang
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing 100020, China
| | - Jie Bai
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Wei-Jia Yu
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China.
| | - Hui-Hua Li
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chao-Yang Hospital, Capital Medical University, No. 8 Worker's Stadium South Road, Beijing 100020, China.
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Feng Z, Zhang N, Bai J, Lin QY, Xie Y, Xia YL. Biochanin A inhibits cardiac hypertrophy and fibrosis in vivo and in vitro. Biomed Pharmacother 2024; 170:116002. [PMID: 38091641 DOI: 10.1016/j.biopha.2023.116002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 01/10/2024] Open
Abstract
The heart undergoes pathological cardiac hypertrophy as an adaptive response to prolonged pathological stimulation, leading to cardiomyocyte hypertrophy, fibroblast proliferation, and an increase in extracellular matrix. Chinese medicine monomers are now receiving much attention for the treatment of cardiac hypertrophy and myocardial remodeling. Biochanin A (BCA) is a kind of flavonoid structural monomer, which has a certain therapeutic effect on bone thinning disease, aging syndrome, lung cancer, etc. Moreover, it exhibits hypoglycemic, anti-inflammatory, anti-oxidation, anti-bacteria and other pharmacological properties. It is still unknown whether BCA has an impact on the mechanism of TAC-induced cardiac hypertrophy. Here, cardiac remodeling was induced by TAC. BCA was injected intraperitoneally at 25 and 50 mg/kg/day one week in advance. Masson, WGA, DHE and other pathological staining and serum were used to detect the inhibitory effect of BCA on cardiac hypertrophy in mice. The anti-hypertrophic effect of BCA was demonstrated by studying the pathological manifestations of Neonatal rat cardiomyocytes (NRCMs) and cardiac fibroblasts (CFs) in vitro. The results showed that BCA significantly reduced TAC-induced fibrosis, inflammation, oxidative stress, and myocardial hypertrophy. BCA inhibited Ang II-induced cell hypertrophy and oxidative stress in NRCMs in vitro and Ang II-induced CF migration, proliferation, and collagen secretion. This suggests that BCA plays a key role in inhibiting the progression of myocardial remodeling, suggesting that BCA may be a promising agent for the treatment of myocardial hypertrophy and fibrosis.
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Affiliation(s)
- Zhenyu Feng
- Institute of Cardiovascular Diseases, The first affiliated Hospital of Dalian Medical University, Dalian, People's Republic of China
| | - Ningning Zhang
- Department of Hematology, the First Affiliated Hospital of Dalian Medical University, Dalian, People's Republic of China
| | - Jie Bai
- Department of Occupational and Environmental Health, School of Public Health, Dalian Medical University, Dalian, People's Republic of China
| | - Qiu-Yue Lin
- Institute of Cardiovascular Diseases, The first affiliated Hospital of Dalian Medical University, Dalian, People's Republic of China
| | - Yunpeng Xie
- Institute of Cardiovascular Diseases, The first affiliated Hospital of Dalian Medical University, Dalian, People's Republic of China.
| | - Yun-Long Xia
- Institute of Cardiovascular Diseases, The first affiliated Hospital of Dalian Medical University, Dalian, People's Republic of China.
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Han X, Zhang YL, Lin QY, Li HH, Guo SB. ATGL deficiency aggravates pressure overload-triggered myocardial hypertrophic remodeling associated with the proteasome-PTEN-mTOR-autophagy pathway. Cell Biol Toxicol 2023; 39:2113-2131. [PMID: 35218467 PMCID: PMC10547847 DOI: 10.1007/s10565-022-09699-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 01/26/2022] [Indexed: 11/26/2022]
Abstract
Persistent myocardial hypertrophy frequently leads to heart failure (HF). Intramyocardial triacylglycerol (TAG) accumulation is closely related with cardiac remodeling and abnormal contractile function. Adipose triglyceride lipase (ATGL), a key enzyme in TAG metabolism, regulates cardiac function. However, its associated molecular pathways have not been fully defined. Here, cardiac hypertrophy and HF were induced in wild-type (WT) or ATGL knockout (KO) mice through transverse aortic constriction (TAC) for up to 4 weeks. TAC in WT mice significantly reduced cardiac function and autophagy while enhancing left ventricular hypertrophy, interstitial fibrosis, inflammatory response, superoxide generation, and cardiomyocyte apoptosis, accompanied with upregulation of the proteasome activity, reduction of PTEN level and activation of AKT-mTOR signaling, and these effects were further aggravated in ATGL KO mice. Interestingly, ATGL KO-mediated cardiac dysfunction and remodeling were markedly reversed by proteasome inhibitor (epoxomicin) or autophagic activator (rapamycin), but accelerated by PTEN inhibitor (VO-OHpic) or autophagy inhibitor 3-MA. Mechanistically, ATGL KO upregulated proteasome expression and activity, which in turn mediates PTEN degradation leading to activation of AKT-mTOR signaling and inhibition of autophagy, thereby enhancing hypertrophic remodeling and HF. In conclusion, ATGL KO contributes to TAC-induced cardiac dysfunction and adverse remodeling probably associated with the proteasome-PTEN-mTOR-autophagy pathway. Therefore, modulation of this pathway may have a therapeutic effect potential for hypertrophic heart disease. TAC-induced downregulation of ATGL results in increased proteasome (β1i/β2i/β5i) activity, which in turn promotes degradation of PTEN and activation of AKT-mTOR signaling and then inhibits autophagy and ATP production, thereby leading to cardiac hypertrophic remodeling and dysfunction. Conversely, blocking proteasome activity or activating autophagy attenuates these effects.
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Affiliation(s)
- Xiao Han
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Yun-Long Zhang
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Hui-Hua Li
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
| | - Shu-Bin Guo
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
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Nguyen TV, Kim Do LT, Namula Z, Lin QY, Torigoe N, Nagahara M, Hirata M, Tanihara F, Otoi TBIRCTUTJ. Vitrified before and after genome editing via electroporation. Cryo Letters 2023; 44:118-122. [PMID: 37883162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
BACKGROUND Cryopreservation of bovine zygotes allows for a flexible schedule of genome editing via electroporation. However, vitrification-induced cell membrane damage may not only affect embryonic development but also genome mutation. OBJECTIVE To investigate the effects of vitrification of zygotes before and after electroporation treatments on the development and genome mutation of bovine presumptive zygotes. MATERIALS AND METHODS In vitro-derived bovine zygotes were electroporated with the CRISPR/Cas9 system immediately (Vitrified-EP) or 2 h after incubation (Vitrified-2h-EP) following vitrification and warming, or electroporated before vitrification (EP-vitrified). RESULTS The development rates of vitrified-warmed zygotes were significantly lower (p < 0.05) than those of control zygotes that were not vitrified. Moreover, no differences were observed in the mutation rates and mutation efficiency of the blastocysts resulting from electroporated zygotes, irrespective of the timing of electroporation treatment. CONCLUSION Our results suggest that vitrification before and after electroporation treatments does not affect the genome editing of zygotes.
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Affiliation(s)
- T V Nguyen
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, 100000 Hanoi, Vietnam; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan
| | - L T Kim Do
- Faculty of Veterinary Medicine, Vietnam National University of Agriculture, 100000 Hanoi, Vietnam; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan.
| | - Z Namula
- College of Coastal Agricultural Sciences, Guangdong Ocean University, 524088 Zhanjiang, China; Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan
| | - Q Y Lin
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - N Torigoe
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - M Nagahara
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
| | - M Hirata
- Bio-Innovation Research Center, Tokushima University, 7793233 Tokushima, Japan; Faculty of Bioscience and Bioindustry, Tokushima University, 7793233 Tokushima, Japan
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Abstract
BACKGROUND Leukocyte adhesion to endothelium is an early inflammatory response and is mainly controlled by the β2-integrins. However, the role of integrin CD11b/CD18 in the pathogenesis of hypertension and vascular dysfunction is unclear. METHODS Hypertension was established by angiotensin II (490 ng/kg·per min) or deoxycorticosterone acetate salt. Hypertensive responses were studied in CD11b-deficient (CD11b-/-) mice, bone marrow transplanted and wild-type (WT) mice that were administered anti-CD11b neutralizing antibody or agonist leukadherin-1. Blood pressure was monitored with tail-cuff method and radiotelemetry. Blood and vascular inflammatory cells were assessed by flow cytometry. Aortic remodeling and function were examined using histology and aortic ring analysis. Cell adhesion and migration were evaluated in vitro. The relationship between circulating CD11b+ immune cells and hypertension was analyzed in patients with hypertension. RESULTS We found that CD11b and CD18 expression as well as the CD45+CD11b+CD18+ myeloid cells were highly increased in the aorta of angiotensin II-infused mice. Ablation or pharmacological inhibition of CD11b in mice significantly alleviated hypertension, aortic remodeling, superoxide generation, vascular dysfunction, and the infiltration of CD11b+ macrophages through reducing macrophage adhesion and migration. These effects were confirmed in WT mice reconstituted with CD11b-deficient bone marrow cells. Conversely, angiotensin II-induced hypertensive response was exacerbated by CD11b agonist leukadherin-1. Notably, circulating CD45+CD11b+CD18+ myeloid cells and the ligand levels in hypertensive patients were significantly higher than in normotensive controls. CONCLUSIONS We demonstrated a critical significance of CD11b+ myeloid cells in hypertension and vascular dysfunction. Targeting CD11b may represent a novel therapeutic option for hypertension.
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Affiliation(s)
- Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y.L., J.B., H.-H.L.)
| | - Jie Bai
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y.L., J.B., H.-H.L.)
| | - Yun-Long Zhang
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China (Y.-L.Z., H.-H.L.)
| | - Hui-Hua Li
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y.L., J.B., H.-H.L.).,Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China (Y.-L.Z., H.-H.L.)
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Qiu ZY, Yu WJ, Bai J, Lin QY. Blocking VCAM-1 ameliorates hypertensive cardiac remodeling by impeding macrophage infiltration. Front Pharmacol 2022; 13:1058268. [PMID: 36467095 PMCID: PMC9713306 DOI: 10.3389/fphar.2022.1058268] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 11/07/2022] [Indexed: 07/21/2023] Open
Abstract
Cardiac remodeling is an important mechanism of heart failure, which frequently results from leukocyte infiltration. Vascular cellular adhesion molecule-1 (VCAM-1) plays a critical role in leukocyte adhesion and transmigration. However, the importance of VCAM-1 in the development of angiotensin II (Ang II)-induced cardiac remodeling remains unclear. Wild-type (WT) mice were infused with Ang II (1,000 ng/kg/min) for 14 days and simultaneously treated with VCAM-1 neutralizing antibody (0.1 or 0.2 mg) or IgG control. Systolic blood pressure (SBP) and cardiac function were detected by a tail-cuff and echocardiography. Cardiac remodeling was evaluated by histological staining. Adhesion and migration of bone marrow macrophages (BMMs) were evaluated in vitro. Our results indicated that VCAM-1 levels were increased in the serum of patients with heart failure (HF) and the hearts of Ang II-infused mice. Furthermore, Ang II-caused hypertension, cardiac dysfunction, hypertrophy, fibrosis, infiltration of VLA-4+ BMMs and oxidative stress were dose-dependently attenuated in mice administered VCAM-1 neutralizing antibody. In addition, blocking VCAM-1 markedly alleviated Ang II-induced BMMs adhesion and migration, therefore inhibited cardiomyocyte hypertrophy and fibroblast activation. In conclusion, the data reveal that blocking VCAM-1 ameliorates hypertensive cardiac remodeling by impeding VLA-4+ macrophage infiltration. Selective blockage of VCAM-1 may be a novel therapeutic strategy for hypertensive cardiac diseases.
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Wang S, Bai J, Zhang YL, Lin QY, Han X, Qu WK, Zhang PF, Ge YS, Zhao Q, Li HH. CXCL1-CXCR2 signalling mediates hypertensive retinopathy by inducing macrophage infiltration. Redox Biol 2022; 56:102438. [PMID: 35981418 PMCID: PMC9418605 DOI: 10.1016/j.redox.2022.102438] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/26/2022] [Accepted: 08/09/2022] [Indexed: 11/04/2022] Open
Abstract
Inflammation plays an important role in hypertensive retinal vascular injury and subsequent retinopathy. Monocyte chemotaxis via CXCL1-CXCR2 binding has been implicated in various cardiovascular diseases, but the function of CXCL1-CXCR2 signalling involved in retinopathy, which was investigated as angiotensin II (Ang II)-induced retinopathy, is unclear. In our study, we established a hypertensive retinopathy (HR) model by Ang II infusion (3000 ng/min/kg) for 3 weeks. To determine the involvement of CXCR2 signalling, we used CXCR2 knockout (KO) mice or C57BL/6J wild-type (WT) mice as experimental subjects. The mice were treated with a CXCL1 neutralizing antibody or SB225002 (the specific CXCR2 inhibitor). Our results showed that after Ang II treatment, the mRNA levels of CXCL1 and CXCR2 and the number of CXCR2+ inflammatory cells were significantly elevated. Conversely, unlike in the IgG control group, the CXCL1 neutralizing antibody greatly reduced the increase in central retinal thickness induced by Ang II infusion, arteriolar remodelling, superoxide production, and retinal dysfunction in WT mice. Furthermore, Ang II infusion induced arteriolar remodelling, infiltration of Iba1+ macrophages, the production of oxidative stress, and retinal dysfunction, but the symptoms were ameliorated in CXCR2 KO mice and SB225002-treated mice. These protective effects were related to the reduction in the number of CXCR2+ immune cells, particularly macrophages, and the decrease in proinflammatory cytokine (IL-1β, IL-6, TNF-ɑ, and MCP-1) expression in Ang II-treated retinas. Notably, serum CXCL1 levels and the number of CXCR2+ monocytes/neutrophils were higher in HR patients than in healthy controls. In conclusion, this study provides new evidence that the CXCL1-CXCR2 axis plays a vital role in the pathogenesis of hypertensive retinopathy, and selective blockade of CXCL1-CXCR2 activation may be a potential treatment for HR.
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Affiliation(s)
- Shuai Wang
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China.
| | - Jie Bai
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian, 116004, China
| | - Yun-Long Zhang
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, 116000, China
| | - Xiao Han
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China
| | - Wei-Kun Qu
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Peng-Fei Zhang
- School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian, 116024, China
| | - Yu-Song Ge
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China
| | - Qi Zhao
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian, 116023, China.
| | - Hui-Hua Li
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, 100020, China.
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Bai J, Lin QY, An X, Liu S, Wang Y, Xie Y, Liao J. Low-Dose Gallic Acid Administration Does Not Improve Diet-Induced Metabolic Disorders and Atherosclerosis in Apoe Knockout Mice. J Immunol Res 2022; 2022:7909971. [PMID: 35652108 PMCID: PMC9150997 DOI: 10.1155/2022/7909971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/21/2022] [Accepted: 05/04/2022] [Indexed: 01/17/2023] Open
Abstract
Diets rich in polyphenols are known to be beneficial for cardiovascular health. Gallic acid (GA) is a plant-derived triphenolic chemical with multiple cardio-protective properties, such as antiobesity, anti-inflammation, and antioxidation. However, whether GA could protect against atherosclerotic cardiovascular diseases is still not defined. Here, we investigated the effects of low-dose GA administration on diet-induced metabolic disorders and atherosclerosis in the atherosclerosis-prone apolipoprotein E (Apoe) knockout mice fed on a high-fat Western-type diet (WTD) for 8 weeks. Our data showed that GA administration by oral gavage at a daily dosage of 20 mg/kg body weight did not significantly ameliorate WTD-induced hyperlipidemia, hepatosteatosis, adipogenesis, or insulin resistance; furthermore, GA administration did not significantly ameliorate WTD-induced atherosclerosis. In conclusion, our data demonstrate that low-dose GA administration does not elicit significant health effect on diet-induced metabolic disorders or atherosclerosis in the Apoe knockout mice. Whether GA could be beneficial for atherosclerotic cardiovascular diseases therefore needs further exploration.
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Affiliation(s)
- Jie Bai
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Xiangbo An
- Department of Interventional Therapy, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Shuang Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Yao Wang
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Yunpeng Xie
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Jiawei Liao
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
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Yin L, Bai J, Yu WJ, Liu Y, Li HH, Lin QY. Blocking VCAM-1 Prevents Angiotensin II-Induced Hypertension and Vascular Remodeling in Mice. Front Pharmacol 2022; 13:825459. [PMID: 35222039 PMCID: PMC8866968 DOI: 10.3389/fphar.2022.825459] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/20/2022] [Indexed: 12/27/2022] Open
Abstract
Adhesion of monocytes to the vascular endothelium frequently leads to an inflammatory response, which contributes to hypertension and vascular remodeling. Vascular cellular adhesion molecule-1 (VCAM-1) plays an important role in leukocyte adhesion and migration during inflammatory diseases. However, its role in angiotensin (Ang) II -induced hypertension and vascular dysfunction remains largely unknown. Wild-type (WT) mice were administered a VCAM-1 neutralizing antibody (0.1 or 0.2 mg/mouse/day) or IgG control and then infused with Ang II (490 ng kg−1 min−1) or saline continuously for 14 days. Systolic blood pressure (SBP) was measured with a tail-cuff system, pathological changes in the aorta were assessed by histological staining, and vascular relaxation was analyzed an aortic ring assay. Our results indicated that compared with saline infusion, Ang II infusion significantly upregulated VCAM-1 expression in the mouse aorta and serum. Moreover, Ang II infusion markedly increased arterial hypertension, wall thickness, fibrosis, infiltration of Mac-2+ macrophages, reactive oxygen species (ROS) production and vascular relaxation dysfunction. Conversely, blockade of VCAM-1 with a neutralizing antibody substantially alleviated these effects. In vitro experiments further confirmed that the VCAM-1 neutralizing antibody inhibited Ang II-induced macrophage adhesion and migration and DNA damage and oxidative stress in endothelial cells (ECs). In conclusion, these results indicate that blockade of VCAM-1 exerts a protective effect against Ang II-induced arterial hypertension and dysfunction by regulating monocytes adhesion and infiltration into the endothelium and represents a novel therapeutic approach for hypertension.
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Affiliation(s)
- Liangqingqing Yin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jie Bai
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Wei-Jia Yu
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ying Liu
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui-Hua Li
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
- Department of Emergency Medicine, Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
- *Correspondence: Hui-Hua Li, ; Qiu-Yue Lin,
| | - Qiu-Yue Lin
- Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
- *Correspondence: Hui-Hua Li, ; Qiu-Yue Lin,
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12
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Xie YP, Lai S, Lin QY, Xie X, Liao JW, Wang HX, Tian C, Li HH. Erratum: CDC20 regulates cardiac hypertrophy via targeting LC3-dependent autophagy: Erratum. Am J Cancer Res 2021; 11:10173. [PMID: 34815811 PMCID: PMC8581423 DOI: 10.7150/thno.68367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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13
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Su YW, Lin QY, Wang JY, Zhang Y, Huang HB, Zhang WF, Liu YM. [Analysis of occupational health status of radiation workers in Guangdong Province]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:278-281. [PMID: 33910288 DOI: 10.3760/cma.j.cn121094-20200302-00097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To discuss the effect of low-dose ionizing radiation on the health of radiation workers, and provide a basis for occupational health risk assessment of radiation workers. Methods: In January 2020, 3165 radiation workers who performed radiation occupational health examinations in Guangzhou Prevention and Treatment Hospital for Occupational Disease from January 2017 to December 2019 were selected as the research objects, and compared and analyzed the health status of radiation workers with different examination types (pre-job, in-job and off-job) , types of work, gender, and length of service. Results: The off-job occupational radiological health examination was rare at 2.3% (74/3165) . The abnormal detection rate of chest radiographs, renal function, thyroid function, and blood routine of the radiation workers in-job group was higher than that of the pre-job group (P<0.05) . No statistical difference was found in the abnormal detection rate of the examination items during the in-job group and the off-job group (P>0.05) . The blood routine abnormality detection rate of medical application group and industrial application group were higher than those of nuclear fuel group (P<0.05) . The abnormal detection rate of blood pressure and renal function of male radiation workers was higher than that of females, while the abnormal detection rate of blood routine of females was higher than that of males (P<0.05) . The abnormal detection rate of electrocardiogram, chest radiograph, blood pressure, renal function, thyroid function, and blood routine of radiation workers increased with increasing working age (P<0.05) . Conclusion: Occupational health status of radiation workers is not optimistic. Radiation occupational health monitoring should be strengthened, special attention should be paid to off-job radiation occupational health examination, focusing on the sensitive indicators of sensitive personnel, improving radiation protection conditions, and effectively protecting the occupational health of radiation workers.
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Affiliation(s)
- Y W Su
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - Q Y Lin
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - J Y Wang
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - Y Zhang
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - H B Huang
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - W F Zhang
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
| | - Y M Liu
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China
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Liu S, Sun WC, Zhang YL, Lin QY, Liao JW, Song GR, Ma XL, Li HH, Zhang B. SOCS3 Negatively Regulates Cardiac Hypertrophy via Targeting GRP78-Mediated ER Stress During Pressure Overload. Front Cell Dev Biol 2021; 9:629932. [PMID: 33585485 PMCID: PMC7874011 DOI: 10.3389/fcell.2021.629932] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/06/2021] [Indexed: 01/17/2023] Open
Abstract
Pressure overload-induced hypertrophic remodeling is a critical pathological process leading to heart failure (HF). Suppressor of cytokine signaling-3 (SOCS3) has been demonstrated to protect against cardiac hypertrophy and dysfunction, but its mechanisms are largely unknown. Using primary cardiomyocytes and cardiac-specific SOCS3 knockout (SOCS3cko) or overexpression mice, we demonstrated that modulation of SOCS3 level influenced cardiomyocyte hypertrophy, apoptosis and cardiac dysfunction induced by hypertrophic stimuli. We found that glucose regulatory protein 78 (GRP78) was a direct target of SOCS3, and that overexpression of SOCS3 inhibited cardiomyocyte hypertrophy and apoptosis through promoting proteasomal degradation of GRP78, thereby inhibiting activation of endoplasmic reticulum (ER) stress and mitophagy in the heart. Thus, our results uncover SOCS3-GRP78-mediated ER stress as a novel mechanism in the transition from cardiac hypertrophy to HF induced by sustained pressure overload, and suggest that modulating this pathway may provide a new therapeutic approach for hypertrophic heart diseases.
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Affiliation(s)
- Shuang Liu
- College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Wen-Chang Sun
- Department of Microbiology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Yun-Long Zhang
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jia-Wei Liao
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Gui-Rong Song
- Department of Health Statistics, School of Public Health, Dalian Medical University, Dalian, China
| | - Xiao-Lei Ma
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui-Hua Li
- Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.,Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Bo Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
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15
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Liao J, An X, Yang X, Lin QY, Liu S, Xie Y, Bai J, Xia YL, Li HH. Deficiency of LMP10 Attenuates Diet-Induced Atherosclerosis by Inhibiting Macrophage Polarization and Inflammation in Apolipoprotein E Deficient Mice. Front Cell Dev Biol 2020; 8:592048. [PMID: 33195259 PMCID: PMC7644912 DOI: 10.3389/fcell.2020.592048] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/05/2020] [Indexed: 12/22/2022] Open
Abstract
Macrophage polarization and inflammation are key factors for the onset and progression of atherosclerosis. The immunoproteasome complex consists of three inducible catalytic subunits (LMP2, LMP10, and LMP7) that play a critical role in the regulation of these risk factors. We recently demonstrated that the LMP7 subunit promotes diet-induced atherosclerosis via inhibition of MERTK-mediated efferocytosis. Here, we explored the role of another subunit of LMP10 in the disease process, using ApoE knockout (ko) mice fed on an atherogenic diet (ATD) containing 0.5% cholesterol and 20% fat for 8 weeks as an in vivo atherosclerosis model. We observed that ATD significantly upregulated LMP10 expression in aortic lesions, which were primarily co-localized with plaque macrophages. Conversely, deletion of LMP10 markedly attenuated atherosclerotic lesion area, CD68+ macrophage accumulation, and necrotic core expansion in the plaques, but did not change plasma metabolic parameters, lesional SM22α+ smooth muscle cells, or collagen content. Myeloid-specific deletion of LMP10 by bone marrow transplantation resulted in similar phenotypes. Furthermore, deletion of LMP10 remarkably reduced aortic macrophage infiltration and increased M2/M1 ratio, accompanied by decreased expression of pro-inflammatory M1 cytokines (MCP-1, IL-1, and IL-6) and increased expression of anti-inflammatory M2 cytokines (IL-4 and IL-10). In addition, we confirmed in cultured macrophages that LMP10 deletion blunted macrophage polarization and inflammation during ox-LDL-induced foam cell formation in vitro, which was associated with decreased IκBα degradation and NF-κB activation. Our results show that the immunoproteasome subunit LMP10 promoted diet-induced atherosclerosis in ApoE ko mice possibly through regulation of NF-κB-mediated macrophage polarization and inflammation. Targeting LMP10 may represent a new therapeutic approach for atherosclerosis.
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Affiliation(s)
- Jiawei Liao
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiangbo An
- Department of Interventional Therapy, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Xiaolei Yang
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Shuang Liu
- Department of Occupational and Environmental Health, School of Public Health, Dalian Medical University, Dalian, China
| | - Yunpeng Xie
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jie Bai
- Department of Occupational and Environmental Health, School of Public Health, Dalian Medical University, Dalian, China
| | - Yun-Long Xia
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation, Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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16
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Lin QY, Bai J, Liu JQ, Li HH. Angiotensin II Stimulates the Proliferation and Migration of Lymphatic Endothelial Cells Through Angiotensin Type 1 Receptors. Front Physiol 2020; 11:560170. [PMID: 33013481 PMCID: PMC7506107 DOI: 10.3389/fphys.2020.560170] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/12/2020] [Indexed: 01/06/2023] Open
Abstract
Background/Aim The proliferation and migration of lymphatic endothelial cells (LECs) is essential for lymphatic vessel growth (also known as lymphangiogenesis), which plays a crucial role in regulating the tissue fluid balance and immune cell trafficking under physiological and pathological conditions. Several growth factors, such as VEGF-C, can stimulate lymphangiogenesis. However, the effects of angiotensin II (Ang II) on the proliferation and migration of mouse LECs and the underlying potential mechanisms remain unknown. Methods Wild-type mice were infused with Ang II (1,000 ng/kg/min) for 1–2 weeks. Murine LECs were stimulated with Ang II (500 nM) or saline for 12–48 h. Cell proliferation was determined with 5-bromo-2-deoxyuridine (BrdU) incorporation assays, while cell migration was assessed by scratch wound healing and transwell chamber assays. The gene expression profiles were obtained by time series microarray and real-time PCR analyses. Results Ang II treatment significantly induced lymphangiogenesis in the hearts of mice and the proliferation and migration of cultured LECs in a time-dependent manner. This effect was completely blocked by losartan, an angiotensin II type 1 receptor (AT1R) antagonist. The microarray results identified 1,385 differentially expressed genes (DEGs) at one or more time points in the Ang II-treated cells compared with the control saline-treated cells. These DEGs were primarily involved in biological processes and pathways, including sensory perception of smell, the G protein coupled receptor signaling pathway, cell adhesion, olfactory transduction, Jak-STAT, alcoholism, RIG-I-like receptor and ECM-receptor interaction. Furthermore, these DEGs were classified into 16 clusters, 7 of which (Nos. 13, 2, 8, 15, 7, 3, and 12, containing 586 genes) were statistically significant. Importantly, the Ang II-induced alterations the expression of lymphangiogenesis-related genes were reversed by losartan. Conclusion The results of the present indicate that Ang II can directly regulate the proliferation and migration of LECs through AT1R in vivo and in vitro, which may provide new potential treatments for Ang II-induced hypertension and cardiac remodeling.
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Affiliation(s)
- Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jie Bai
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jin-Qiu Liu
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital of Dalian Medical University, Dalian, China
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17
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Lang PP, Bai J, Zhang YL, Yang XL, Xia YL, Lin QY, Li HH. Blockade of intercellular adhesion molecule-1 prevents angiotensin II-induced hypertension and vascular dysfunction. J Transl Med 2020; 100:378-386. [PMID: 31527830 DOI: 10.1038/s41374-019-0320-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/03/2019] [Accepted: 08/06/2019] [Indexed: 12/31/2022] Open
Abstract
Monocyte and adhesion infiltration into the arterial subendothelium are initial steps in hypertension development. The endothelial intercellular adhesion molecule-1 (ICAM-1) has been implicated in the recruitment and adhesion of leukocytes in several cardiac diseases. However, the role of ICAM-1 in angiotensin II (Ang II)-induced hypertension development remains unknown. Hypertension was induced by administering an infusion of Ang II (1000 ng/kg/min) to wild-type (WT) mice treated with an IgG control or ICAM-1 neutralizing antibody (1 and 2 mg/mouse/day, respectively). Blood pressure was determined using the tail-cuff system. Vascular remodeling was assessed by performing a histological examination. Inflammation and reactive oxygen species (ROS) levels were determined by using immunostaining. Vascular dysfunction was assessed by aortic ring assay. The expression of fibrotic markers, cytokines and NOX was evaluated by quantitative real-time PCR analysis. Our results demonstrate that Ang II infusion markedly increased the ICAM-1 level in the aorta. Blocking ICAM-1 with a neutralizing antibody significantly attenuated Ang II-induced arterial hypertension, vascular hypertrophy, fibrosis, macrophage infiltration, and ROS production and improved vascular relaxation. In conclusion, ICAM-1-mediated monocyte adhesion and migration play a critical role in Ang II-induced arterial hypertension and vascular dysfunction. ICAM-1 inhibitors may represent a new therapeutic strategy for the treatment of this disease.
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Affiliation(s)
- Ping-Ping Lang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China
| | - Jie Bai
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China
| | - Yun-Long Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China
| | - Xiao-Lei Yang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China
| | - Yun-Long Xia
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China.
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, 116011, Dalian, China.
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18
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Zheng XY, Luo SH, Wei XY, Ling P, Ai HY, Liu ZY, Lin QY, Lü J, Yao B, Yan JH, Weng JP, Yang DZ. [Related factors for microalbuminuria in adult type 1 diabetes patients of short disease duration]. Zhonghua Yi Xue Za Zhi 2020; 100:419-423. [PMID: 32146763 DOI: 10.3760/cma.j.issn.0376-2491.2020.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate related factors for microalbuminuria in adult type 1 diabetes (T1D) patients of short disease duration (less than 5 years), and provide evidence for prevention of early diabetic kidney disease in this population. Methods: All adult patients enrolled in the Guangdong T1D translational medicine study between 2011 and 2017 with a disease duration of less than 5 years were included in this analysis. At enrollment, patients' demographic and clinical data were documented, and blood and urine samples were collected for the measurements of blood lipids, glycated hemoglobin A1c and urine albuminuria. Insulin resistance was evaluated by estimated glucose disposal rate (eGDR). Patients were categorized into groups based on urine albumin creatitine ratio (UACR): normoalbuminuric group (UACR<30 mg/g) and microalbuminuric group (UACR≥30 mg/g). Stepwise multivariate linear regression analysis was used to analyze risk factors for microalbuminuria in adult T1D patients of short disease duration. Results: A total of 384 patients were included in this analysis, and 51.3% (197/384) of which was female. The onset age of patients was (24.6±12.5) years, with a disease duration of 2.1(0.6, 3.5) years, body mass index of (19.8±3.2) kg/m(2), waist hip ratio of 0.85±0.21, and glycated hemoglobin A1c of (9.8±3.3)% at enrollment. Microalbuminuria occurred in 62 patients (16.1%). Multivariate linear analysis showed that higher glycated hemoglobin A1c, higher systolic blood pressure and more severe insulin resistance were related factors for microalbuminuria (t=2.322, 2.868 and -2.373, respectively, all P<0.05). Conclusions: Microalbuminuria was not rare in adult T1D patients of short disease duration. Inadequate glycemic control and insulin resistance were independent related factors for microalbuminuria in this population.
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Affiliation(s)
- X Y Zheng
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - S H Luo
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - X Y Wei
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - P Ling
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - H Y Ai
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Z Y Liu
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Q Y Lin
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J Lü
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - B Yao
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J H Yan
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J P Weng
- Department of Endocrinology, the First Affiliated Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - D Z Yang
- Department of Endocrinology and Metabolism, the Third Affiliated Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
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Zhang R, Zhu JC, Hu H, Lin QY, Shao W, Ji TH. MicroRNA-140-5p suppresses invasion and proliferation of glioma cells by targeting glutamate-ammonia ligase (GLUL). Neoplasma 2020; 67:371-378. [PMID: 31986891 DOI: 10.4149/neo_2020_190514n432] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 08/26/2019] [Indexed: 11/08/2022]
Abstract
Glutamine addiction is a major feature of glioma cells and plays an important role in its growth and proliferation. GLUL (glutamate-ammonia ligase), which catalyzes glutamate and ammonia to synthesize glutamine, plays a crucial role in tumor growth and proliferation. We attempt to determine a pathway that limits the growth of glioma by targeting GLUL and explore effective strategies blocking glutamine metabolism. We note that miRNAs mediate regulation of genes participating directly or indirectly in cancer cell metabolism. The regulatory roles of miRNAs on metabolic enzymes are widely discussed, however miRNAs regulation of glutamine metabolism by targeting GLUL in glioma has not yet been reported. Here, we examined both the expression and functions of GLUL in glioma cells. Findings indicated that the expression of GLUL was upregulated in high-grade compared to low-grade glioma cells. Knockdown of GLUL effectively inhibited proliferation, migration and invasion of glioma cells in vitro. Bioinformatics analyses, as well as dual-luciferase reporter assays, revealed that miR-140-5p bound to GLUL mRNA at the 3'-UTR location. Furthermore, the proliferation, migration and invasion of glioma cells were also repressed by miR-140-5p. Overall, these results showed that miR-140-5p exerted its inhibitory effects on proliferation, migration and invasion in glioma cells through downregulating GLUL. Thus, the miR-140-5p/GLUL axis may function as a potential target for glioma treatment.
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Affiliation(s)
- R Zhang
- Chinese People's Liberation Army No. 174 Clinical College, Anhui Medical University, Xiamen, China
| | - J C Zhu
- Chinese People's Liberation Army No. 174 Clinical College, Anhui Medical University, Xiamen, China
| | - H Hu
- Department of Pathology, Air Force Hospital of Southern Theater Command, Guangzhou, China
| | - Q Y Lin
- Department of Pathology, Affiliated Chenggong Hospital, Xiamen University, Xiamen, China
| | - W Shao
- Department of Pathology, Affiliated Chenggong Hospital, Xiamen University, Xiamen, China
| | - T H Ji
- Chinese People's Liberation Army No. 174 Clinical College, Anhui Medical University, Xiamen, China.,Department of Pathology, Affiliated Chenggong Hospital, Xiamen University, Xiamen, China
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20
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Li YR, Tang YX, Qiu CX, Lin QY, Xie CJ, Zhou MY, Liu YM. [Analysis of common gynecological diseases in 1142 married female workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:785-788. [PMID: 31726513 DOI: 10.3760/cma.j.issn.1001-9391.2019.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the prevalence of gynecologic diseases among married female workers. Methods: The data of married female workers who underwent occupational health examination in a physical examination center from January to December 2017 were collected. The relationship between the detection of common gynecological diseases, age and occupational types examined by gynecological routine, TCT, breast B-mode ultrasound, uterus and appendix B-mode ultrasound were analyzed. Results: Among the 1142 female workers, the total detection rate of reproductive tract infections was 67.25% (768/1142), the total detection rate of breast-related diseases was 75.22% (859/1142) ; the total detection rate of gynecological tumors and benign lesions was 14.71% (168/1142). The detection rate of breast hyperplasia was the highest 67.08% (766/1142), followed by vaginitis 51.66% (590/1142). Among the abnormalities detected in breast-related diseases, gynecological tumors and benign lesions, the highest detection rate was found in public institutions (85.66% and 27.13%), and the lowest was found in factory workers (70.24% and 7.89%). With the increase of age, the detection rate of breastrelated diseases (breast hyperplasia, breast cyst), gynecological tumors, benign lesions (uterine myoma), and Nessler's cyst abnormalities in married female workers increased (χ(2)(trend)=7.647、21.653、107.411、53.802, P<0.05), while the detection rate of columnar epithelium of cervix decreased (χ(2)(trend)=7.404, P<0.05). There was no significant difference in the total detection rate of reproductive tract infectious diseases (vaginitis, cervical polyps, cervical hypertrophy) among married famale workers of different ages (P<0.05) . Conclusion: The common gynecological diseases of married female workers are affected by many factors such as age and occupation. Health examination and health education should be carried out regularly to reduce the incidence of gynecological diseases among female workers according to different ages and occupations.
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Affiliation(s)
- Y R Li
- Guangzhou Occupational Disease Prevention and Treatment Hospital, Guangzhou 510620, China; Institute of Occupational and Environmental Health, Guangzhou Medical University, Guangzhou 510180, China
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Lin QY, Lang PP, Zhang YL, Yang XL, Xia YL, Bai J, Li HH. Pharmacological blockage of ICAM-1 improves angiotensin II-induced cardiac remodeling by inhibiting adhesion of LFA-1 + monocytes. Am J Physiol Heart Circ Physiol 2019; 317:H1301-H1311. [PMID: 31729904 DOI: 10.1152/ajpheart.00566.2019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intercellular adhesion molecule-1 (ICAM-1) is a member of an immunoglobulin-like superfamily of adhesion molecules that mediate leukocyte adhesion to vascular endothelium and are involved in several cardiovascular diseases, including ischemia-reperfusion injury, myocardial infarction, and atherosclerosis. However, the role of ICAM-1 in angiotensin II (ANG II)-induced cardiac remodeling in mice remains unclear. Wild-type mice were administered an IgG control or ICAM-1 neutralizing antibody (1 and 2 mg/mouse, respectively) and ANG II (1,000 ng·kg-1·min-1) for up to 14 days. Cardiac contractile function and structure were detected by echocardiography. Hypertrophy, fibrosis, and inflammation were assessed by histological examination. The infiltration of lymphocyte function-associated antigen-1 (LFA-1+) monocytes/macrophages was assessed by immunostaining. The mRNA expression of genes was evaluated by quantitative RT-PCR analysis. Protein levels were tested by immunoblotting. We found that ICAM-1 expression in ANG II-infused hearts and ICAM-1 levels in serum from human patients with heart failure were significantly increased. Moreover, ANG II infusion markedly enhanced ANG II-induced hypertension, caused cardiac contractile dysfunction, and promoted cardiac hypertrophy, fibrosis, and LFA-1+ macrophage infiltration. Conversely, blockage of ICAM-1 with a neutralizing antibody dose-dependently attenuated these effects. Moreover, our in vitro data further demonstrated that blocking ICAM-1 inhibited ANG II-induced LFA-1+ macrophage adhesion to endothelial cells and migration. In conclusion, these results provide novel evidence that blocking ICAM-1 exerts a protective effect in ANG II-induced cardiac remodeling at least in part through the modulation of adhesion and infiltration of LFA-1+ macrophages in the heart. Inhibition of ICAM-1 may represent a new therapeutic approach for hypertrophic heart diseases.NEW & NOTEWORTHY Leukocyte adhesion to vascular endothelium is a critical step in cardiovascular diseases. ICAM-1 is a member of immunoglobulin-like superfamily of adhesion molecules that binds LFA-1 to mediate leukocytes adhesion and migration. However, the significance of ICAM-1 in ANG II-induced cardiac remodeling remains unclear. This study reveals that blocking of ICAM-1 prevents ANG II-induced cardiac remodeling via modulating adhesion and migration of LFA-1+ monocytes, may serve as a novel therapeutic target for hypertensive cardiac diseases.
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Affiliation(s)
- Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Ping-Ping Lang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Yun-Long Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Xiao-Lei Yang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Yun-Long Xia
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Jie Bai
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian, Medical University, Dalian, China
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22
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Wang S, Li J, Wang T, Bai J, Zhang YL, Lin QY, Li JM, Zhao Q, Guo SB, Li HH. Ablation of Immunoproteasome β5i Subunit Suppresses Hypertensive Retinopathy by Blocking ATRAP Degradation in Mice. Mol Ther 2019; 28:279-292. [PMID: 31636038 DOI: 10.1016/j.ymthe.2019.09.025] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 09/11/2019] [Accepted: 09/26/2019] [Indexed: 02/07/2023] Open
Abstract
Inflammation is associated with retinal diseases. Our recent data demonstrate that immunoproteasome catalytic subunit β2i contributes to angiotensin II (Ang II)-induced retinopathy in mice. Here, we investigated the role of another catalytic subunit β5i in regulating retinopathy and its underlying mechanisms. We induced a murine model of retinopathy by infusing Ang II (3,000 ng/kg/min) for 3 weeks into wild-type (WT) mice, β5i-knockout (KO) mice, or WT mice injected with either adenovirus-expressing β5i (Ad-β5i) or angiotensin II type 1 receptor (AT1R)-associated protein (Ad-ATRAP), which inhibits AT1R. The β5i expression and chymotrypsin-like activity were most significantly elevated in Ang II-infused retinas and serum from patients with hypertensive retinopathy. Moreover, Ang II infusion-induced retinopathy was markedly attenuated in β5i-KO mice but aggravated in Ad-β5i-injected mice. Accordingly, β5i KO markedly restored Ang II-induced downregulation of ATRAP and activation of AT1R downstream mediators, which was further enhanced in Ad-β5i-injected mice. Interestingly, overexpression of ATRAP significantly abrogated Ang II-induced retinopathy in Ad-β5i-injected mice. This study found that β5i promoted Ang II-induced retinopathy by promoting ATRAP degradation and activation of AT1R-mediated signals.
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Affiliation(s)
- Shuai Wang
- Department of Ophthalmology, Institute of Heart and Vascular Diseases, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning, China.
| | - Jing Li
- Department of Cardiology, Institute of Heart and Vascular Diseases, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning, China
| | - Tong Wang
- Department of Ophthalmology, Institute of Heart and Vascular Diseases, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning, China
| | - Jie Bai
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning, China
| | - Yun-Long Zhang
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning, China
| | - Jing-Min Li
- Department of Ophthalmology, Institute of Heart and Vascular Diseases, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning, China
| | - Qi Zhao
- Department of Ophthalmology, Institute of Heart and Vascular Diseases, Second Affiliated Hospital of Dalian Medical University, Dalian 116027, Liaoning, China
| | - Shu-Bin Guo
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - Hui-Hua Li
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China.
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23
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Zheng XY, Yang DZ, Ai HY, Qiu LL, Ling P, Wu ZK, Wei XY, Lin QY, Lü J, Yan JH, Yao B, Weng JP, Luo SH. [Awareness of preconceptional care and its related factors in women of child-bearing age with type 1 diabetes]. Zhonghua Yi Xue Za Zhi 2019; 99:2654-2659. [PMID: 31505714 DOI: 10.3760/cma.j.issn.0376-2491.2019.34.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the awareness of preconception care among women of child-bearing age with type 1 diabetes (T1DM) and their self-management status, in order to provide evidence for establishment of management pathway for women with T1DM in pregnancy in China. Methods: This cross-sectional survey recruited female participants of child-bearing age from the cohort of Guangdong Type 1 Diabetes Translational Medicine Study conducted between June 2011 and December 2017. The participants were asked to fill out a questionnaire on the awareness of preconception care, their frequency of self-monitoring of blood glucose (SMBG) and other related variables. Chi-squared test or chi-squared test for trend was used in comparisons of categorical variables, and logistic regression analysis was performed to assess associated factors. Results: Totally, 441 women of child-bearing age with T1DM were investigated. The results show that their awareness of preconception care was poor (15.42%, 68/441). Higher educational level (χ(2trend)=3.990, P=0.046), experience of post-diabetes education evaluation (P<0.001), and better coverage of different modules in diabetes education (survival skills: χ(2)=7.525, P=0.004; basic knowledge: χ(2)=8.598, P=0.002; advanced knowledge: P<0.001) were associated with better awareness of preconception care. The average frequency of SMBG in these participants was 0.29 (0.14, 2.00) times per day, and only 8.5% (37/435) of them reached the frequency (≥4 times per day) recommended by guidelines. Moreover, 21.1% (92/435) of them hardly ever performed SMBG. Conclusion: Child-bearing age women with T1DM in Gunangdong had poor awareness of preconception care, with a much lower SMBG frequency than recommendation.
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Affiliation(s)
- X Y Zheng
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - D Z Yang
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - H Y Ai
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - L L Qiu
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - P Ling
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Z K Wu
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - X Y Wei
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - Q Y Lin
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J Lü
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J H Yan
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - B Yao
- Department of Endocrinology and Metabolism, the Third Affiliation Hospital of Sun Yat-sen University, Guangdong Diabetes Prevention and Control Research Center, Guangdong Provincial Key Laboratory of Diabetology, Guangzhou 510630, China
| | - J P Weng
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
| | - S H Luo
- Department of Endocrinology, the First Affiliation Hospital of University of Science and Technology (Anhui Provincial Hospital), Hefei 230001, China
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Li J, Wang S, Zhang YL, Bai J, Lin QY, Liu RS, Yu XH, Li HH. Immunoproteasome Subunit β5i Promotes Ang II (Angiotensin II)–Induced Atrial Fibrillation by Targeting ATRAP (Ang II Type I Receptor–Associated Protein) Degradation in Mice. Hypertension 2019; 73:92-101. [PMID: 30571551 DOI: 10.1161/hypertensionaha.118.11813] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Atrial fibrillation (AF) is the most common type of cardiac arrhythmia and increases the risk of stroke, heart failure, and death. Ang II (angiotensin II) triggers AF, mainly through stimulation of the AT1R (Ang II type I receptor). The immunoproteasome is a highly efficient proteolytic machine derived from the constitutive proteasome, but the role it plays in regulating AT1R activation and triggering AF remains unknown. Here, we show that among the catalytic subunits, β5i (PSMB8) expression, and chymotrypsin-like activity were the most significantly upregulated in atrial tissue of Ang II–infused mice or serum from patients with AF. β5i KO (β5i knockout) in mice markedly attenuated Ang II-induced AF incidence, atrial fibrosis, inflammatory response, and oxidative stress compared with WT (wild type) animals, but injection with recombinant adeno-associated virus serotype 9–β5i increased these effects. Moreover, we found that ATRAP (AT1R-associated protein) was a target of β5i. Overexpression of ATRAP significantly attenuated Ang II-induced atrial remodeling and AF in recombinant adeno-associated virus serotype 9–β5i-injected mice. Mechanistically, Ang II upregulated β5i expression to promote ATRAP degradation, which resulted in activation of AT1R-mediated NF-κB signaling, increased NADPH oxidase activity, increased TGF (transforming growth factor)-β1/Smad signaling, and altered the expression of Kir2.1 and CX43 (connexin 43) in the atria, thereby affecting atrial remodeling and AF. In summary, this study identifies β5i as a negative regulator of ATRAP stability that contributes to AT1R activation and to AF, highlighting that targeting β5i activity may represent a potential therapeutic approach for the treatment of hypertensive AF.
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Affiliation(s)
- Jing Li
- From the Department of Cardiology, Institute of Heart and Vascular Diseases (J.L.), Second Affiliated Hospital of Dalian Medical University, China
| | - Shuai Wang
- Department of Ophthalmology (S.W.), Second Affiliated Hospital of Dalian Medical University, China
| | - Yun-Long Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, China (Y.-L.Z., J.B., H.-H.L.)
| | - Jie Bai
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, China (Y.-L.Z., J.B., H.-H.L.)
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y. L., X.-H.Y., H.-H.L.)
| | - Rui-Sheng Liu
- Department of Molecular Pharmacology and Physiology, University of South Florida College of Medicine, Tampa (R.-S.L.)
| | - Xiao-Hong Yu
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y. L., X.-H.Y., H.-H.L.)
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, China (Q.-Y. L., X.-H.Y., H.-H.L.)
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, China (Y.-L.Z., J.B., H.-H.L.)
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Xie YP, Lai S, Lin QY, Xie X, Liao JW, Wang HX, Tian C, Li HH. CDC20 regulates cardiac hypertrophy via targeting LC3-dependent autophagy. Am J Cancer Res 2018; 8:5995-6007. [PMID: 30613277 PMCID: PMC6299438 DOI: 10.7150/thno.27706] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 10/08/2018] [Indexed: 12/17/2022] Open
Abstract
Rationale: Sustained cardiac hypertrophy often leads to heart failure (HF). Understanding the regulation of cardiomyocyte growth is crucial for the treatment of adverse ventricular remodeling and HF. Cell division cycle 20 (CDC20) is an anaphase-promoting complex activator that is essential for cell division and tumorigenesis, but the role of CDC20 in cardiac hypertrophy is unknown. We aimed to test whether CDC20 participates in the regulation of pathological cardiac hypertrophy and investigate the underlying mechanism in vitro and in vivo. Methods: Male C57BL/6 mice were administered a recombinant adeno-associated virus serotype 9 (rAAV9) vector expressing CDC20 or a siRNA targeting CDC20 and their respective controls by tail intravenous injection. Results: Microarray analysis showed that CDC20 was significantly upregulated in the heart after angiotensin II infusion. Knockdown of CDC20 in cardiomyocytes and in the heart reduced cardiac hypertrophy upon agonist stimulation or transverse aortic constriction (TAC). Conversely, enforced expression of CDC20 in cardiomyocytes and in the heart aggravated the hypertrophic response. Furthermore, we found that CDC20 directly targeted LC3, a key regulator of autophagy, and promoted LC3 ubiquitination and degradation by the proteasome, which inhibited autophagy leading to hypertrophy. Moreover, knockdown of LC3 or inhibition of autophagy attenuated Ang II-induced cardiomyocyte hypertrophy after deletion of CDC20 in vitro. Conclusions: Our study reveals a novel cardiac hypertrophy regulatory mechanism that involves CDC20, LC3 and autophagy, and suggests that CDC20 could be a new therapeutic target for patients with hypertrophic heart diseases.
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Chen C, Zou LX, Lin QY, Yan X, Bi HL, Xie X, Wang S, Wang QS, Zhang YL, Li HH. Resveratrol as a new inhibitor of immunoproteasome prevents PTEN degradation and attenuates cardiac hypertrophy after pressure overload. Redox Biol 2018; 20:390-401. [PMID: 30412827 PMCID: PMC6226597 DOI: 10.1016/j.redox.2018.10.021] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 10/28/2018] [Indexed: 01/01/2023] Open
Abstract
Sustained cardiac hypertrophy is a major cause of heart failure (HF) and death. Recent studies have demonstrated that resveratrol (RES) exerts a protective role in hypertrophic diseases. However, the molecular mechanisms involved are not fully elucidated. In this study, cardiac hypertrophic remodeling in mice were established by pressure overload induced by transverse aortic constriction (TAC). Cardiac function was evaluated by echocardiography and invasive pressure-volume analysis. Cardiomyocyte size was detected by wheat germ agglutinin staining. The protein and gene expressions of signaling mediators and hypertrophic markers were examined. Our results showed that administration of RES significantly suppressed pressure overload-induced cardiac hypertrophy, fibrosis and apoptosis and improved in vivo heart function in mice. RES also reversed pre-established hypertrophy and restoring contractile dysfunction induced by chronic pressure overload. Moreover, RES treatment blocked TAC-induced increase of immunoproteasome activity and catalytic subunit expression (β1i, β2i and β5i), which inhibited PTEN degradation thereby leading to inactivation of AKT/mTOR and activation of AMPK signals. Further, blocking PTEN by the specific inhibitor VO-Ohpic significantly attenuated RES inhibitory effect on cardiomyocyte hypertrophy in vivo and in vitro. Taken together, our data suggest that RES is a novel inhibitor of immunoproteasome activity, and may represent a promising therapeutic agent for the treatment of hypertrophic diseases. Resveratrol (RES) protects from pressure overload-induced cardiac hypertrophic remodeling. RES can inhibit immunosubunit expression and activity in cardiomyocytes. RES increases PTEN stability leading to inhibition of AKT/mTOR and activation of AMPK. Blocking PTEN significantly attenuates RES-mediated beneficial effect on cardiomyocyte hypertrophy.
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Affiliation(s)
- Chen Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Lei-Xin Zou
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Xiao Yan
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Hai-Lian Bi
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Xin Xie
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Shuai Wang
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Qing-Shan Wang
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China
| | - Yun-Long Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China; Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
| | - Hui-Hua Li
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, Dalian 116044, China; Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
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27
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Zhang YL, Zhi LY, Zou LX, Chen C, Bai J, Lin QY, Lai S, Wang L, Liu Y, Li HH. Analysis of Genes Related to Angiotensin II-Induced Arterial Injury Using a Time Series Microarray. Cell Physiol Biochem 2018; 48:983-992. [PMID: 30036880 DOI: 10.1159/000491966] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Accepted: 05/30/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND/AIMS Angiotensin II (Ang II)-mediated hypertension is a major risk factor for cardiovascular diseases. Ang II induces changes in vessel structure and function through the activation of genes related to signaling pathways. However, the changes in the gene expression profiles of blood vessels in response to Ang II remain unclear. METHODS Wild-type C57BL/6 mice were infused with Ang II (1500 ng/kg/min) using an osmotic pump for 1, 3, and 7 days. Vascular wall inflammation and remodeling were evaluated by pathological examination. Time-series microarray and quantitative PCR analyses were performed. Bioinformatics analyses were conducted to identify key genes, pathways, and biological processes. RESULTS After Ang II infusion, blood pressure and aortic remodeling were increased over time. Microarray analysis identified a totally of 3631 differentially expressed genes in aortas at days 1, 3, and 7 of Ang II infusion. These genes were involved in multiple biological processes, including cell adhesion, angiogenesis, cell migration, protein phosphorylation, immune system, and cell cycle, which may play important roles in regulating Ang II-induced arterial injury during hypertension. The genes were classified into 50 profiles by hierarchical cluster analysis, and finally, 14 significant profiles were identified. Among these genes, protein kinase cAMP-activated catalytic subunit alpha (Prkaca), a gene that directly regulated 137 neighboring genes, was located at the center of the gene network in Ang II-infused aortas. Further, Prkaca protein expression and cAMP level were downregulated in a time-dependent manner in Ang II-infused aortas. CONCLUSIONS The combined use of DNA microarrays and cluster and gene network analyses identified Prkaca as a key Ang II-responsive gene that may mediate early vascular injury and hypertension.
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Affiliation(s)
- Yun-Long Zhang
- School of Public Health, Dalian Medical University, Dalian, China
| | - Lian-Yun Zhi
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei-Xin Zou
- School of Public Health, Dalian Medical University, Dalian, China
| | - Chen Chen
- School of Public Health, Dalian Medical University, Dalian, China
| | - Jie Bai
- School of Public Health, Dalian Medical University, Dalian, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Song Lai
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Lei Wang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ying Liu
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hui-Hua Li
- School of Public Health, Dalian Medical University, Dalian, China.,Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian, China
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Wang S, Li J, Bai J, Li JM, Che YL, Lin QY, Zhang YL, Li HH. The immunoproteasome subunit LMP10 mediates angiotensin II-induced retinopathy in mice. Redox Biol 2018; 16:129-138. [PMID: 29499566 PMCID: PMC5952914 DOI: 10.1016/j.redox.2018.02.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2018] [Revised: 02/21/2018] [Accepted: 02/22/2018] [Indexed: 01/27/2023] Open
Abstract
Inflammation has been implicated in a variety of retinal diseases. The immunoproteasome plays a critical role in controlling inflammatory responses, but whether activation of immunoproteasome contributes to angiotensin II (Ang II)-induced retinopathy remains unclear. Hypertensive retinopathy (HR) was induced by infusion of Ang II (3000 ng/kg/min) in wild-type (WT) and immunoproteasome subunit LMP10 knockout (KO) mice for 3 weeks. Changes in retinal morphology, vascular permeability, superoxide production and inflammation were examined by pathological staining. Our results showed that immunoproteasome subunit LMP10 expression and its trypsin-like activity were significantly upregulated in the retinas and serum of Ang II-infused mice and in the serum from patients with hypertensive retinopathy. Moreover, Ang II-infused WT mice showed an increase in the central retinal thickness, vascular permeability, reactive oxygen species (ROS) production and inflammation compared with saline controls, and these effects were significantly attenuated in LMP10 KO mice, but were aggravated in mice intravitreally injected with rAAV2-LMP10. Interestingly, administration of IKKβ specific inhibitor IMD-0354 remarkably blocked an Ang II-induced increase in vascular permeability, oxidative stress and inflammation during retinopathy. Mechanistically, Ang II-induced upregulation of LMP10 promoted PTEN degradation and activation of AKT/IKK signaling, which induced IkBα phosphorylation and subsequent degradation ultimately leading to activation of NF-kB target genes in retinopathy. Therefore, this study provided novel evidence demonstrating that LMP10 is a positive regulator of NF-kB signaling, which contributes to Ang II-induced retinopathy. Strategies for inhibiting LMP10 or IKKβ activity in the eye could serve as a novel therapeutic target for treating hypertensive retinopathy.
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Affiliation(s)
- Shuai Wang
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China; School of Public Health, Dalian Medical University, Dalian 116004, China
| | - Jing Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 11600, China
| | - Jie Bai
- School of Public Health, Dalian Medical University, Dalian 116004, China
| | - Jing-Min Li
- Department of Ophthalmology, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Yi-Lin Che
- Department of Radiotherapy Oncology, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 11600, China
| | - Yun-Long Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 11600, China
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, Dalian 11600, China; School of Public Health, Dalian Medical University, Dalian 116004, China.
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29
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Wang L, Zhang YL, Lin QY, Liu Y, Guan XM, Ma XL, Cao HJ, Liu Y, Bai J, Xia YL, Du J, Li HH. CXCL1–CXCR2 axis mediates angiotensin II-induced cardiac hypertrophy and remodelling through regulation of monocyte infiltration. Eur Heart J 2018. [PMID: 29514257 DOI: 10.1093/eurheartj/ehy085] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Lei Wang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Yun-Long Zhang
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Qiu-Yue Lin
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Yu Liu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Capital Medical University, No.10, Xitoutiao Road, You An Men Wai, Fengtai District, Beijing 100069, China
| | - Xu-Min Guan
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Xiao-Lei Ma
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Hua-Jun Cao
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Ying Liu
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Jie Bai
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, No. 9W, Lvshun South Road, Lvshunkou District, Dalian 116044, China
| | - Yun-Long Xia
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
| | - Jie Du
- The Key Laboratory of Remodeling-Related Cardiovascular Diseases, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, No. 2, Anzhen Road, Chaoyang District, Beijing 100029, China
| | - Hui-Hua Li
- Department of Cardiology, Institute of Cardiovascular Diseases, First Affiliated Hospital of Dalian Medical University, No.193, Lianhe Road, Xigang District, Dalian 116011, China
- Department of Nutrition and Food Hygiene, School of Public Health, Dalian Medical University, No. 9W, Lvshun South Road, Lvshunkou District, Dalian 116044, China
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Song WJ, Lin QY, Jiang WJ, Du FY, Qi QY, Wei Q. Synthesis, interaction with DNA and antiproliferative activities of two novel Cu(II) complexes with norcantharidin and benzimidazole derivatives. Spectrochim Acta A Mol Biomol Spectrosc 2015; 137:122-128. [PMID: 25218220 DOI: 10.1016/j.saa.2014.08.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 08/17/2014] [Accepted: 08/23/2014] [Indexed: 06/03/2023]
Abstract
Two novel complexes [Cu(L)2(Ac)2]·3H2O (1) (L=N-2-methyl benzimidazole demethylcantharate imide, C16H15N3O3, Ac=acetate, C2H3O2) and [Cu(bimz)2(DCA)] (2) (bimz=benzimidazole, C7H6N2; DCA=demethylcantharate, C8H8O5) were synthesized and characterized by elemental analysis, infrared spectra and X-ray diffraction techniques. Cu(II) ion was four-coordinated in complex 1, Cu(II) ion was five-coordinated in complex 2. A large amount of intermolecular hydrogen-bonding and π-π stacking interactions were observed in these complex structures. The DNA-binding properties of these complexes were investigated using electronic absorption spectra, fluorescence spectra, viscosity measurements and agarose gel electrophoresis. The interactions between the complexes and bovine serum albumin (BSA) were investigated by fluorescence spectra. The antiproliferative activities of the complexes against human hepatoma cells (SMMC7721) were tested in vitro. And the results showed that these complexes could bind to DNA in moderate intensity via partial intercalation, and complexes 1 and 2 could cleave plasmid DNA through hydroxyl radical mechanism. Title complexes could effectively quench the fluorescence of BSA through static quenching. Meanwhile, title complexes had stronger antiproliferative effect compared to L and Na2(DCA) within the tested concentration range. And complex 1 possessed more antiproliferative active than complex 2.
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Affiliation(s)
- Wen-Ji Song
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China.
| | - Wen-Jiao Jiang
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Fang-Yuan Du
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
| | - Qing-Yuan Qi
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China.
| | - Qiong Wei
- College of Chemical and Life Science, Zhejiang Normal University, 321004, PR China
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Song WJ, Zhu WZ, Qi QY, Lin QY, Lei X, Du FY. Synthesis of Rare Earth Complexes With N-Pyrimidine Norcantharidin Acylamide Acid, DNA-Binding, and Antiproliferative Activity. ACTA ACUST UNITED AC 2014. [DOI: 10.1080/15533174.2013.841214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Wen-Ji Song
- Zhejiang Key Laboratory for Reaction Chemistry on Solid Surfaces, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
| | - Wen-Zhong Zhu
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
| | - Qing-Yuan Qi
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reaction Chemistry on Solid Surfaces, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
| | - Xing Lei
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
| | - Fang-Yuan Du
- College of Chemical and Life Science, Zhejiang Normal University, Jinhua, Zhejiang, P. R. China
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Hu MH, Zheng QF, Jia XZ, Li Y, Dong YC, Wang CY, Lin QY, Zhang FY, Zhao RB, Xu HW, Zhou JH, Yuan HP, Zhang WH, Ren H. Neuroprotection effect of interleukin (IL)-17 secreted by reactive astrocytes is emerged from a high-level IL-17-containing environment during acute neuroinflammation. Clin Exp Immunol 2014; 175:268-84. [PMID: 24117055 DOI: 10.1111/cei.12219] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/04/2013] [Indexed: 01/24/2023] Open
Abstract
An increase in interleukin (IL)-17A-producing cells, particularly at sites of tissue inflammation, is observed frequently, yet the mechanism is not fully understood. This study aims to dissect the role of IL-17 in autoimmunity-mediated neuroinflammation. The cytokine milieu containing elevated IL-17, which often appears in active states of autoimmunity, was mimicked in vitro by a supernatant obtained from rat peripheral blood monocytes stimulated with phorbol mystistate acetate (PMA)/ionomycin. The application of such inflammatory media on only primary cultured cerebellar granule neurones resulted in significant apoptosis, but the presence of astrocytes largely prevented the effect. The supernatants of the stimulated astrocytes, especially those that contained the highest level of IL-17, achieved the best protection, and this effect could be blocked by anti-IL-17 antibodies. Protein IL-17 inhibited intracellular calcium increase and protected the neurones under inflammatory attack from apoptosis. IL-17, but not interferon (IFN)-γ, in the inflammatory media contributed to astrocyte secretion of IL-17, which depended on the Janus kinase/signal transducers and activators of transcription (JAK/STAT) pathway activation. The astrocytes that were treated with IL-17 alone or with prolonged treatment of the inflammatory media failed to produce sufficient levels of IL-17. Moreover, confirmatory data were obtained in vivo in a monophasic experimental autoimmune uveitis (EAU) in Lewis rats; in this preparation, the high-level IL-17-containing the cytokine milieu was demonstrated, along with IL-17 secretion by the resident neural cells. The antagonism of IL-17 at a late stage disturbed the disease resolution and resulted in significant neural apoptosis. Our data show a dynamic role of IL-17 in the maintenance of homeostasis and neuroprotection in active neuroinflammation.
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Affiliation(s)
- M H Hu
- Department of Immunology, Harbin Medical University, Harbin, China; Infection and Immunity, Key Laboratory of Heilongjiang Province, Harbin, China
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Song WJ, Cheng JP, Jiang DH, Guo L, Cai MF, Yang HB, Lin QY. Synthesis, interaction with DNA and antiproliferative activities of two novel Cu(II) complexes with Schiff base of benzimidazole. Spectrochim Acta A Mol Biomol Spectrosc 2013; 121:70-76. [PMID: 24220672 DOI: 10.1016/j.saa.2013.09.142] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/05/2013] [Accepted: 09/29/2013] [Indexed: 06/02/2023]
Abstract
Two novel copper(II) complexes with Schiff base of benzimidazole [Cu(L)Cl]2·CH3OH have been synthesized. HL(1) (N-(benzimidazol-2-ymethyl)-5-chlorosalicylideneimine, C15H11ClN3O) and HL(2) (N-(benzimidazol-2-ymethyl)-salicylideneimine, C15H12N3O) are ligands of complex (1) and complex (2), respectively. The complexes were characterized by elemental analysis, IR, UV-Vis, TGA and X-ray diffraction. Within the complexes, Cu(II) ions were four coordinated by two nitrogen atom of azomethine and imine, one phenolic oxygen atom from HL and one chloride atom. A distorted quadrilateral structure was formed. Complex (1) crystallized in the triclinic crystal system. Results showed that π-π stacking effect occurred due to the existence of aromatic ring from Schiff base and hydrogen bonding between methanol and adjacent atoms. The DNA binding properties of the complexes were investigated by electronic absorption spectra, fluorescence spectra and viscosity measurements. Results indicated that complexes bound to DNA via partial intercalation mode. The DNA binding constants Kb/(L mol(-1)) were 1.81×10(4) (1), 1.37×10(4) (2), 6.27×10(3) (HL(1)) and 3.14×10(3) (HL(2)) at 298 K. The title complexes could quench the emission intensities of EB-DNA system significantly. The results of agarose gel electrophoresis indicated complex (1) could cleave supercoiled DNA through the oxidative mechanism. The inhibition ratios revealed that complex (1) and HL(1) had strong antiproliferative activities against human breast cancer cells (MCF-7) lines and human colorectal cancer cells (COLO205) lines in vitro. The antiproliferative activities of complex (1) against MCF-7 lines (IC50=16.9±1.5 μmol L(-1)) and against COLO205 lines (IC50=16.5±3.4 μmol L(-1)) is much stronger than that of HL(1), which had the potential to develop anti-cancer drug.
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Affiliation(s)
- Wen-Ji Song
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Zhejiang 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Jian-Ping Cheng
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Dong-Hua Jiang
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Li Guo
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Meng-Fei Cai
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Hu-Bin Yang
- College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Zhejiang 321004, PR China; College of Chemical and Life Science, Zhejiang Normal University, Zhejiang 321004, PR China.
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Zhang F, Lin QY, Liu WD, Wang PP, Song WJ, Zheng BW. Crystal structure, interaction with DNA, and bovine serum albumin of the cobalt(II) complex of demethylcantharate and 2,2′-bipyridine. J COORD CHEM 2013. [DOI: 10.1080/00958972.2013.803220] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Fan Zhang
- a Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces , Zhejiang Normal University , Jinhua , P.R. China
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
| | - Qiu-Yue Lin
- a Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces , Zhejiang Normal University , Jinhua , P.R. China
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
| | - Wei-Dong Liu
- a Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces , Zhejiang Normal University , Jinhua , P.R. China
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
| | - Peng-Peng Wang
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
| | - Wen-Ji Song
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
| | - Bo-Wen Zheng
- b College of Chemical and Life Science , Zhejiang Normal University , Jinhua , P.R. China
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Zhang F, Lin QY, Hu WL, Song WJ, Shen ST, Gui P. Interaction with biomacromolecules and antiproliferative activities of Mn(II), Ni(II), Zn(II) complexes of demethylcantharate and 2,2'-bipyridine. Spectrochim Acta A Mol Biomol Spectrosc 2013; 110:100-107. [PMID: 23557779 DOI: 10.1016/j.saa.2013.03.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Revised: 02/17/2013] [Accepted: 03/03/2013] [Indexed: 06/02/2023]
Abstract
Three new transition metal complexes [Mn2(DCA)2(bipy)2]·5H2O (1), [M2(DCA)2(bipy)2(H2O)]·10H2O(M=Ni(II)(2);Zn(II)(3)), (DCA=demethylcantharate, 7-oxabicyclo[2,2,1]heptane-2,3-dicarboxylate, C8H8O5) were synthesized and characterized by elemental analysis, molar conductance, infrared spectra and X-ray diffraction techniques. Each metal ion was six-coordinated in complexes. Complex 1 has a Mn2O2 center. Complexes 2 and 3 have asymmetric binuclear structure. Great amount of intermolecular hydrogen-bonding and π-π(*) stacking interactions were formed in these complex structures. The DNA-binding properties of complexes were investigated by electronic absorption spectra and viscosity measurements. The DNA binding constants Kb/(Lmol(-1)) were 1.71×10(4) (1), 2.62×10(4) (2) and 1.59×10(4) (3) at 298 K. The complexes could quench the intrinsic fluorescence of bovine serum albumin (BSA) strongly through static quenching. The protein binding constants Ka/(L mol(-1)) were 7.27×10(4) (1), 4.55×10(4) (2) and 7.87×10(4) L mol(-1) (3) and binding site was one. The complexes bind more tightly with DNA and BSA than with ligands. Complexes 1 and 3 had stronger inhibition ratios than Na2(DCA) against human hepatoma cells (SMMC-7721) lines and human gastric cancer cells (MGC80-3) lines in vitro. Complex 3 showed the strongest antiproliferative activity against SMMC-7721 (IC50=29.46±2.12 μmol L(-1)) and MGC80-3 (IC50=27.02±2.38 μmol L(-1)), which shows potential in anti-cancer drug development.
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Affiliation(s)
- Fan Zhang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Jinhua 321004, PR China
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Zhang F, Zheng XL, Lin QY, Wang PP, Song WJ. Two novel cadmium(II) complexes with demethylcantharate and polypyridyl: Crystal structure, interactions with DNA and bovine serum albumin. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.07.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang F, Lin QY, Li SK, Zhao YL, Wang PP, Chen MM. Synthesis, interaction with DNA and bovine serum albumin of the transition metal complexes of demethylcantharate and 2-aminobenzothiazole. Spectrochim Acta A Mol Biomol Spectrosc 2012; 98:436-443. [PMID: 22995471 DOI: 10.1016/j.saa.2012.08.074] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 08/17/2012] [Accepted: 08/24/2012] [Indexed: 06/01/2023]
Abstract
Four new transition metal complexes (Habtz)(2)[M(DCA)(2)]·6H(2)O (M=Co(II) (1), Ni(II) (2), Cu(II) (3), Zn(II) (4); DCA=demethylcantharate, 7-oxabicyclo [2.2.1]heptane-2,3-dicarboxylate, C(8)H(8)O(5); Habtz=2-aminobenzothiazole acid, C(7)H(7)N(2)S) were synthesized and characterized by elemental analysis, molar conductance, infrared spectra and thermogravimetric analysis. The coordination number of complex was six. The X-ray diffraction analysis indicated that complex 3 crystallized in the triclinic crystal system with P1¯ space group. The DNA-binding properties of the complexes were investigated by electronic absorption spectra, fluorescence spectra, viscosity measurements. Title complexes could bind to DNA via partial intercalative mode. The K(b) of the complexes were 5.33×10(4) (1), 7.04×10(4) (2), 9.91×10(4) (3) and 5.03×10(4) L mol(-1) (4). The results of agarose gel electrophoresis showed that Cu(II) complex could cleave pBR322 plasmid DNA via radical-based mechanism. The complexes could quench the intrinsic fluorescence of bovine serum albumin (BSA) through a static quenching with the binding constants K(a) of 1.11×10(4) (1), 1.24×10(6) (2), 8.42×10(5) (3) and 1.75×10(4) L mol(-1) (4). The complexes had intense antiproliferative activities against human hepatoma cell lines (SMMC7721) and human gastric cancer cells (MGC80-3) lines in vitro. Cu(II) complex had the strongest activity against human gastric cancer cells.
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Affiliation(s)
- Fan Zhang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Zhejiang Normal University, Jinhua 321004, PR China
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Zhang F, Lin QY, Chen LL, Ke JG. Bis(2-amino-1,3-benzothiazol-3-ium) bis(7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)cadmate hexahydrate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m818. [PMID: 22719361 PMCID: PMC3379140 DOI: 10.1107/s1600536812022593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2012] [Accepted: 05/17/2012] [Indexed: 11/25/2022]
Abstract
In the structure of the title complex, (C7H7N2S)2[Cd(C8H8O5)2]·6H2O, the CdII atom is located on an inversion center and is O,O′,O′′-chelated by two symmetry-related 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylate ligands in a distorted octahedral geometry. The 2-aminobenzothiazolium cation links with the Cd complex anion via N—H⋯O hydrogen bonding. Extensive O—H⋯O and N—H⋯O hydrogen bonds involving lattice water molecules occur in the crystal structure.
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Zhang F, Lv TX, Feng J, Lin QY. Bis(2-aminobenzothiazol-3-ium) bis(7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato-κ 3O2, O3, O7)zincate hexahydrate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m684. [PMID: 22590166 PMCID: PMC3344404 DOI: 10.1107/s1600536812017886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2012] [Accepted: 04/21/2012] [Indexed: 11/22/2022]
Abstract
In the title hydrated molecular salt, (C7H7N2S)2[Zn(C8H8O5)2]·6H2O, which is isotypic with its MnII, CoII and NiII analogues, the Zn2+ ion lies on a crystallographic inversion centre and a distorted ZnO6 octahedral coordination geometry arises from the two doubly deprotonated O,O′,O′′-tridentate ligands. In the crystal, the components are linked by N—H⋯Oa, N—H⋯Ow, Ow—H⋯Oa and Ow—H⋯Ow hydrogen bonds (w = water and a = anion).
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Zhang F, Lin QY, Wang YC, He JD. catena-Poly[[diaqua-cobalt(II)]-μ(2)-7-oxa-bicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-κO,O,O:O]. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m146. [PMID: 22346827 PMCID: PMC3274880 DOI: 10.1107/s1600536812000554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2011] [Accepted: 01/06/2012] [Indexed: 12/05/2022]
Abstract
The polymeric title complex, [Co(C8H8O5)(H2O)2]n was synthesized by reaction of cobalt acetate with 7-oxabicyclo[2,2,1]heptane-2,3-dicarboxylic anhydride. The CoII ion is six-coordinated in a distorted octahedral environment, binding to two water O atoms, to the ether O atom of the bicycloheptane unit, to two carboxylate O atoms from two different carboxylate groups of the same anion and to one carboxylate O atom from a symmetry-related anion. The bridging character of the dianion leads to the formation of ribbons along [001]. The ribbons are linked into a layered network parallel to (010) by several O—H⋯O hydrogen-bonding interactions involving the coordinating water molecules as donors and the carboxylate O atoms of neighbouring ribbons as acceptors. The crystal under investigation was an inversion twin.
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Wang PP, Lin QY, Zhang F. 4-(3,5-Dioxo-10-oxa-4-aza-tricyclo-[5.2.1.0]decan-4-yl)-10-oxa-4-aza-tricyclo-[5.2.1.0]decane-3,5-dione. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o381. [PMID: 22347004 PMCID: PMC3275059 DOI: 10.1107/s1600536812000542] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Accepted: 01/06/2012] [Indexed: 12/01/2022]
Abstract
In the title compound, C16H16N2O6, the dihedral angle between the two pyrrolidine rings is 79.38 (14)°.
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Zhang LL, Li SK, Feng J, Lin QY. Poly[[(2,2′-bipyridine)( μ3-7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)cadmium] monohydrate]. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1390-1. [PMID: 22065044 PMCID: PMC3201414 DOI: 10.1107/s1600536811036634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2011] [Accepted: 09/08/2011] [Indexed: 11/12/2022]
Abstract
The title compound, {[Cd(C8H8O5)(C10H8N2)]·H2O}n, was obtained by the reaction of cadmium acetate with 2,2′-bipyridine and 7-oxabicyclo(2.2.1)heptane-2,3-dicarboxylic anhydride. The CdII atom is seven-coordinated in a distorted pentagonal–bipyramidal configuration, defined by five O atoms from the carboxylate groups of three 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato ligands and two N atoms from the 2,2′-bipyridine ligand. Two O atoms link two CdII atoms, forming a dinuclear center: the Cd—O—Cd bridging angle is 110.19 (6)°. The polymeric structure extends along [100] and is linked by intermolecular O—H⋯O hydrogen bonds involving the solvent water molecule. Extensive π–π stacking exists between 2,2-bypiridine ligands along [010] with centroid-centroid distance of 3.650 (2) Å
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Zhang F, Jia AP, Lin QY. Triaqua-(7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-κO,O,O)cobalt(II) monohydrate. Acta Crystallogr Sect E Struct Rep Online 2011; 67:m1119-20. [PMID: 22090887 PMCID: PMC3212185 DOI: 10.1107/s1600536811028431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2011] [Accepted: 07/15/2011] [Indexed: 11/21/2022]
Abstract
The title complex, [Co(C8H8O5)(H2O)3]·H2O, was synthesized by reaction of cobalt acetate with 7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylic anhydride (norcantharidin) in aqueous solution. In the molecule, the CoII atom is six-coordinated in a distorted octahedral environment, binding to the bridging O atom of the bicycloheptane unit, to two O atoms from monodentate carboxylate groups and to three water O atoms. The crystal structure is stabilized by several O—H⋯O hydrogen-bonding interactions involving both the coordinated and uncoordinated water molecules as donors and the carboxylate O atoms of neighbouring molecules as acceptors.
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Li SK, Zhang F, Lv TX, Lin QY. exo-4-[(1H-Benzimidazol-2-yl)meth-yl]-10-oxa-4-aza-tricyclo-[5.2.1.0]decane-3,5-dione. Acta Crystallogr Sect E Struct Rep Online 2011; 67:o1974. [PMID: 22091012 PMCID: PMC3213433 DOI: 10.1107/s1600536811026602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2011] [Accepted: 07/04/2011] [Indexed: 11/10/2022]
Abstract
In the title compound, C(16)H(15)N(3)O(3), the dihedral angle between the approximately planar benzimidazolyl group (r.m.s. deviation = 0.010 Å) and the pyrrolidine ring is 78.20 (6)°. The C-C-N bond angle of the bridging CH(2) group is 112.14 (16)°. In the crystal, mol-ecules are linked via N-H⋯N hydrogen bonds, forming infinite chains parallel to [101] and [10[Formula: see text]].
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Wang N, Lin QY, Feng J, Zhao YL, Wang YJ, Li SK. Crystal structures, DNA interaction and antiproliferative activities of the cobalt(II) and zinc(II) complexes of 2-amino-1,3,4-thiadiazole with demethylcantharate. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.06.039] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
AIMS To increase the fruit body production of Cordyceps guangdongensis, selected cultivation conditions, especially nutritional parameters were optimized. METHODS AND RESULTS Cordyceps guangdongensis was inoculated on potato dextrose agar slants with pH values from 4.5 to 9.0 and cultivated in artificial media with different carbon and nitrogen supplements. Primordium formation in C. guangdongensis was favoured by slightly acidic conditions. Fruit body yields and biological efficiency (BE) recorded were all highest in cultures of C. guangdongensis supplemented with sucrose and KNO3 as carbon and nitrogen supplements, respectively. Highest fruit body yields and BE values were recorded with C : N ratio of 12 : 1. The optimal medium consisted of (g l(-1)) 20.0 sucrose, 4.0 soya bean powder, 5.0 beef extract and 10.0 KNO3. Cultivation experiments using this medium confirmed its reliability; 18.35% of BE was obtained, compared with a calculated maximum BE of 18.65% based on orthogonal test data. CONCLUSIONS Cordyceps guangdongensis preferred sucrose and potassium nitrate as best carbon and nitrogen supplements. It produced satisfying yield of fruit body with optimized medium. SIGNIFICANCE AND IMPACT OF THE STUDY Optimized artificial cultivation conditions could promote the yield of C. guangdongensis and decreased the cost of production.
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Affiliation(s)
- Q Y Lin
- Guangdong Provincial Open Laboratory of New Microbial Application Technology, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, China
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Wang N, Wu YZ, Lin QY. Tris(2-amino-1,3-thia-zole-κN)(7-oxa-bicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato-κO,O,O)cadmium(II) dihydrate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:m961-m962. [PMID: 21588187 PMCID: PMC3007392 DOI: 10.1107/s1600536810027170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Accepted: 07/08/2010] [Indexed: 05/30/2023]
Abstract
In the crystal structure of the title complex, [Cd(C(8)H(8)O(5))(C(3)H(4)N(2)S)(3)]·2H(2)O, the Cd(II) atom exhibits a slightly distorted octa-hedral CdO(3)N(3) coordination, defined by the bridging O atom of the bicyclo-heptane unit, two O atoms from the carboxyl-ate groups and by three N atoms from three 2-amino-thia-zole ligands. Uncoordinated lattice water mol-ecules are also present in the crystal structure. N-H⋯O and O-H⋯O hydrogen-bonding inter-actions link the components into a three-dimensional structure.
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Affiliation(s)
- Na Wang
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, People’s Republic of China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, Zhejiang, People’s Republic of China
| | - Yi-Zhou Wu
- College of Public Administration, Zhejiang University, Hangzhou, 310027, Zhejiang , People’s Republic of China
| | - Qiu-Yue Lin
- Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua, Zhejiang 321004, People’s Republic of China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, Zhejiang, People’s Republic of China
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Wang N, Lin QY, Feng J, Li SK, Zhao JJ. Bis(2-amino-3 H-benzothiazolium) bis(7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)cobaltate(II) hexahydrate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:m763-4. [PMID: 21587697 PMCID: PMC3006894 DOI: 10.1107/s1600536810020921] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2010] [Accepted: 06/01/2010] [Indexed: 11/10/2022]
Abstract
In the crystal structure of the title salt, (C7H7N2S)2[Co(C8H8O5)2]·6H2O, the heterocyclic N atom of the 2-aminobenzothiazole molecule is protonated. The CoII atom is situated on an inversion centre and exhibits a slightly distorted octahedral CoO6 coordination defined by the bridging O atoms of the bicycloheptane unit and four carboxylate O atoms of two symmetry-related and fully deprotonated ligands. The crystal packing is stabilized by N—H⋯O hydrogen bonds between the cations and anions and by O—H⋯O hydrogen bonds including the crystal water molecules.
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49
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Wang N, Wen YH, Lin QY, Feng J. Bis(2-amino-3 H-benzothiazolium) bis(7-oxabicyclo[2.2.1]heptane-2,3-dicarboxylato)manganate(II) hexahydrate. Acta Crystallogr Sect E Struct Rep Online 2010; 66:m762. [PMID: 21587696 PMCID: PMC3007082 DOI: 10.1107/s160053681002091x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2010] [Accepted: 06/01/2010] [Indexed: 11/11/2022]
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Wang N, Feng J, Wang DH, Lin QY. catena-Poly[[diaqua-manganese(II)]-μ-7-oxabicyclo-[2.2.1]heptane-2,3-dicarboxyl-ato]. Acta Crystallogr Sect E Struct Rep Online 2010; 66:m717. [PMID: 21579348 PMCID: PMC2979419 DOI: 10.1107/s1600536810019021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2010] [Accepted: 05/21/2010] [Indexed: 11/10/2022]
Abstract
In the title polymer, [Mn(C(8)H(8)O(5))(H(2)O)(2)](n), the Mn(II) atom is in a distorted octa-hedral coordination mode, binding to the bridging O atom of the bicyclo-heptane unit, two O atoms from corresponding carboxyl-ate groups, one carboxyl-ate O atom from a symmetry-related bridging ligand and two water O atoms. This arrangement leads to the formation of polymeric chains propagating parallel to [001]. The crystal structure is stabilized by several O-H⋯O hydrogen-bonding inter-actions involving the coordinated water mol-ecules as donors and the carboxyl-ate O atoms as acceptors.
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